DIY Panoramic Sunroof Clip Repair in Place
I've updated the material to a stronger carbon filled material that seems to be holding up quite well. I'm using a set on my personal vehicle and also have positive feedback from a number of other testers with some age on theirs installs.
I have a large qty. printed now (after some downtime on my 3D printer).
Pricing is $30 per pair of clips (per vehicle side).
Venmo me @davet797 and include your shipping address.
I'm also attaching an install instruction sheet to this post for reference.
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Hi all....I recently started to do a DIY lube maintenance on the panoramic sunroof on my C400 and realized that one of the plastic v-shaped guide clips was broken.
After researching this problem, I realized that this is a pretty widespread issue with this OEM sunroof design and many people have reported a similar issue. This ultimately causes road noise and binding during opening/closing.
The published repair involves removing the entire headliner in the vehicle to gain access to the end of the guiderails in order to slide in the replacement clips (a lot of work).
I decided to design a repair-in-place clip to solve this issue. I printed them on my 3D printer out of PLA and installed on my car and it has been in service for about 2 months now without any issue. They are working amazingly well!
The clips will install on the guiderail, then the sunroof yoke will slip down into the grooves, then the retainer inserts will get a dab of superglue and be pressed into place to lock it all in place. Allow the glue to cure for 4 hours before using sunroof.
I was a bit leery that super glue would have enough "guts" to hold up....but it turns out the super glue is actually stronger than the PLA plastic.
Attached are a few pics showing the design.
I'm looking for anyone else who has the broken clip issue and would like to try out my clips? I want some additional feedback on how well they'll hold up with use.
Anyone?
My email is kharnett85@gmail.com
Last edited by Kaveman; May 8, 2023 at 07:04 PM. Reason: Adding information
Can't speak to how long the part or sunroof will work. But it did open and close the 4 times I needed it to. It is now in the closed position and I will never use it again.
Thank you to the developer in France who 3D printed this piece. Saved me between $2,000 and $3,500. It is a genius design.
Before I buy the replacement recommended in this thread, I picked the broken parts from the rails. Besides the broken plastic pieces, I also picked out one velvet covered rubber piece (labeled 1 in the photos) and two thin rubber gaskets (labeled 2 in the photos). Does anyone know where they should go? I guess the velvet covered piece should to to the end the rail to dampen the impact when the roof is closed?
I have a 2015 w205 c300. Thanks.
EDIT: I figured out that the rubber seal should go on the side of the clip, and apparently I have lost two of them.
The Best of Mercedes & AMG




If not how do I pay by paypal to buy? (Couldn't find your email).
Do you ship to UK?
Lastly do you do the colour black rather than green?
Thanks
sorry for my bad english. The dealership quoted me around 2k to fix it which is insane.
fwiw I have yet to have any of my sunroof repair jobs come back with issues, using the oem parts and factory repair guidelines. We have a few tricks we use to ensure proper installation and to avoid having to do the job twice. I’m not sure the issue is the plastic clips as much as hasty assembly, and misalignment of the guide rails from the factory. The plastic clips appear to me to be a purposefully weak point in the assembly to avoid glass shattering instances for example. Before leaving Mercedes I was responsible for inspecting the new cars that came in to the dealership. Most often the issues were found on the cars out of the Alabama plant, where most of our w205’s come from
In my opinion the entire array of pano roof cars should have a service campaign to have the sunroof rails and plastic clips inspected for proper alignment and integrity. I also own a 2005 w211 Mercedes that only recently in the last couple of years had a recall for “sunroof glass may fly off the car”. The recall process involved yanking on the sunroof glass, if the glass doesn’t come off then the car is considered good to go. Quite a crude way to test someone’s 15 year old sunroof, but the name of the game is to maximize profits and reduce losses. It seems they’ve decided the pano roof issues are not worth issuing a real recall unfortunately. One of the many reasons I decided to leave Mercedes
Last edited by ctravis595; Aug 15, 2023 at 06:29 PM.
I bought some A Clips from ebay and modified them by cutting a tiny piece off using a dremel tool so that the roof nut can just slot in to the A clip and then drilling a tiny hole for the pin retainers to keep it in place.
This worked really well, greased up the roof as well.
Problem solved.




